In Texas, the state’s law specifies the condition where an individual lacks the normal use of their mental or physical faculties due to the introduction of alcohol, a controlled substance, a drug, a dangerous drug, or a combination of these substances into the body. This impairment can be demonstrated through blood alcohol concentration (BAC) at or above 0.08, or through observable evidence of impaired motor skills, judgment, or alertness. For example, a driver exhibiting slurred speech, unsteady gait, and poor coordination, coupled with a BAC reading of 0.10, would likely meet the criteria of being in an impaired state under Texas law.
Understanding the condition, as legally defined, is crucial for several reasons. It forms the basis for criminal charges such as Driving While Intoxicated (DWI) and Public Intoxication. Furthermore, this condition can influence civil liability in cases of accidents or injuries. The historical context reveals an evolving legislative and judicial focus on public safety and holding individuals accountable for actions committed while faculties are impaired, reflecting societal concerns over alcohol and drug-related harm.